CN100583726C - Transmission technique selection method - Google Patents
Transmission technique selection method Download PDFInfo
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- CN100583726C CN100583726C CN200410037125A CN200410037125A CN100583726C CN 100583726 C CN100583726 C CN 100583726C CN 200410037125 A CN200410037125 A CN 200410037125A CN 200410037125 A CN200410037125 A CN 200410037125A CN 100583726 C CN100583726 C CN 100583726C
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Abstract
A transmission technology selection method, which contains setting error code imitation equipment between base station and base station controller to obtain the corresponding relation between quality and error code ratio in data and phonetic service by imitation method for determining the threshold value of error code ratio in various service, said invention can evaluate whether said equipment is adapted for 3G wireless accessing by comparing the error code ratio standard of transmission equipment with the threshold value of error code ratio.
Description
Technical field
The present invention relates to the communications field, particularly transmission technology system of selection.
Background technology
Along with the development and the people of technology are more and more higher to the demand of mobile data services, 3-G (Generation Three mobile communication system) (Third Generation Mobile Communications System is called for short " 3G ") has entered the fast development stage.The target of 3G is: the height consistency in the world wide in the design; Compatible with the fixed network miscellaneous service; High quality-of-service; The little terminal of using in the global range; Has the global roaming ability; Support multimedia function and extensively professional terminal.
Mobile communication system is huge, a complicated system, in view of structure, mainly comprise 4 main bodys: base station sub-system (Base Station Subsystem, abbreviation " BSS "), network and switching subsystem (Network Switch Subsystem, abbreviation " NSS "), operation subsystem (OperatingSubSystem, be called for short " OSS ") and travelling carriage (Mobile Station is called for short " MS ").Wherein base station sub-system BSS provides relaying between the standing part of mobile communications network and wireless portion, on the one hand BSS directly communicates to connect with the travelling carriage realization by wave point, BSS is connected to the mobile services switching centre (Mobile Switch Center is called for short " MSC ") of network terminal again on the other hand.BSS can be divided into two parts: base transceiver station (the Base TransceiverStation that links to each other with travelling carriage by wave point, be called for short " BTS ") and the base station controller (Base StationController, abbreviation " BSC ") that links to each other with switch of opposite side.BTS is responsible for wireless transmission, and BSC is responsible for control and management.BSS is made up of a BSC and one or more BTS, and a base station controller can be controlled dozens of BTS according to the telephone traffic needs.BTS can directly link to each other with BSC, also can link to each other with the BSC of far-end by Base Station Interface Equipment.Base station sub-system also should comprise parts such as code pattern converter and submultiplex equipment.
Base station controller BSC is control and the administrative section of base station sub-system BSS, between MSC and BTS, the BTS of control and administrative institute linchpin with carry out protocol processes, mainly be responsible for finishing the monitor management of wireless network management, RRM and wireless base station, the foundation of control travelling carriage and BTS wireless connections, continue and management such as dismounting, control location, switching and the paging of finishing travelling carriage.
Base transceiver station BTS belongs to the wireless portion of base station sub-system BSS, be controlled by base station controller, be the wireless receiving and dispatching letter equipment of serving certain sub-district, finish the conversion between BSC and the wireless channel, realize between BTS and the MS reception of the wireless signal by air interface and send and relevant controlled function.
Because a BSC may manage a plurality of BTS, therefore geographically BSC may place separately, also may be placed on any one BTS place or puts together with MSC.Like this, the distance between BSC and the BTS just may be far, need connect by certain transmission system.Every kind of transmission system all has its some indexs, as transmission rate, the error rate etc.The error rate is meant the probability that data that receiving terminal is received in data transmission procedure and the data that transmitting terminal sends are compared and gone wrong, and for example the error rate is 10
-5, just expression average per 10
5An error code can take place when being transferred to the opposite end in individual sign indicating number.
In being about to commercial 3G system, no matter be Wideband Code Division Multiple Access (WCDMA) (Wide-band Code DivisionMultiple Access, be called for short " WCDMA "), CDMA 2000 (Code Division MultipleAccess 2000, be called for short " CDMA2000 "), or TD SDMA (TimeDivision-Synchronous Code Division Multiple Access, be called for short " TD-SCDMA "), their transmission lines between base station controller and base station can adopt multiple transmission technology, wire transmission technology is arranged, Radio Transmission Technology is also arranged; Ripe transmission technology is arranged, as microwave transmission, SDH (Synchronous Digital Hierarchy) (Synchronous Digital Hierarchic, abbreviation " SDH ") optical transmission, satellite transmits etc., emerging transmission technology is also arranged, as E1 OVER IP, free space optical communication (Free Space OpticalCommunication is called for short " FSO ") etc.
Whether these transmission technologys can unconditionally introduce the 3G wireless access network, voice, data service to 3G under different transmission conditions have great influence, for the existing a solution of these problems is exactly to introduce this transmission technology in practice earlier, in use test comparison, determine whether it is fit to the 3G wireless access network.
In actual applications, there is following problem in such scheme: can't qualitative assessment before a certain transmission technology is applied to the 3G wireless access network its whether be applicable to this network.If be not suitable for then needing thoroughly to upgrade transmission technology and relevant device, not only waste time and energy, and cause huge investment waste.
Cause the main cause of this situation to be, present stage does not exist suitable appraisal procedure whether to be applicable to the 3G wireless access network to assess a certain transmission technology in advance.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of transmission technology system of selection, make and need in actual 3G network, not dispose, and only by the given index of transmission equipment specification or test this transmission equipment and just can assess whether suitable 3G wireless access network of certain transmission technology.
For achieving the above object, the invention provides a kind of transmission technology system of selection, comprise following steps:
A measures pairing data transmission efficiency under the transmission conditions of the described different error rates by the transmission conditions of the different error rates of simulation between first and second communication equipments;
B determines the efficiency of transmission threshold value according to type of service and user to the requirement of efficiency of transmission, determines corresponding error rate threshold value in view of the above;
C selects the error rate to be lower than the transmission technology of described error rate threshold value, realizes the transmission between described first and second communication equipments.
Wherein, described first equipment is the base station, and described second equipment is base station controller.
In the described steps A,, realize simulation to different error rate transmission conditions by between described first and second communication equipments, the error code analog machine being set.
In the described steps A, to under the transmission conditions of the different error rates, transmit the identical required transmission time of big small documents, with the error rate be under zero the transmission conditions required transmission time of the described file of transmission compare, obtain pairing efficiency of transmission under the transmission conditions of the different error rates.
In the described steps A, under the transmission conditions of same bit error rate, repeatedly transmit described file, and with the pairing transmission time under the transmission conditions of mean value as this error rate of required time.
Described method is used for the transmission technology of 3G (Third Generation) Moblie technology wireless access network and selects.
By relatively finding, technical scheme difference with the prior art of the present invention is, by the error code analog machine is set between base station and base station controller, obtain the corresponding relation of system effectiveness and voice quality and the error rate and can determine error rate threshold value thus, transmission equipment error rate index of introducing by desire relatively and the error rate threshold value selected just can be assessed this equipment and whether be applicable to the 3G wireless access network again.
Difference on this technical scheme has brought comparatively significantly beneficial effect, promptly just can assess the demand whether this technology satisfies the 3G wireless access network before certain transmission technology is applied to real network.And the present invention is applicable to all 3G systems, comprises WCDMA, CDMA2000 and TD-SCDMA, and is easy to use, shortened the cycle of the new transmission technology of in 3G system introducing, and can effectively avoid the investment waste.
Description of drawings
Fig. 1 is a 3G wireless access network transmission technology selective system structure chart involved in the present invention;
Fig. 2 is the schematic flow sheet according to the principle of transmission technology system of selection of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1 shows 3G wireless access network transmission technology selective system structure chart.
As shown in Figure 1, in one embodiment of the invention, 3G wireless access network transmission technology selective system is made of base station, error code analog machine and base station controller.Wherein the error code analog machine is between base station and the base station controller, links to each other with both respectively.
The base station except that a side with the error code analog machine links to each other, opposite side directly links to each other by wireless channel with the user, its main task is to be responsible for mobile subscriber's the access and the transmitting-receiving of data.Base station controller except that a side with the error code analog machine links to each other, opposite side links to each other with MSC in the network subsystem, the main control of being responsible for the base station comprises functions such as interface interconnection, channel management, a common base station controller can be controlled a plurality of base stations.
Need to prove that in the 3G of reality system, directly link to each other by reliable transmission line between base station and the base station controller, the error ratio characteristic of circuit directly has influence on the efficient of commencing business in this system.As 3G wireless access network transmission technology selective system, the present invention has inserted the error code analog machine on the base station of actual 3G system and base station controller connection line.The error code analog machine both can utilize existing maturing apparatus, also can insert equipment for independently developed error code.Can record the efficient of system under the different error rate situations by the error rate that the error code analog machine is set, thereby obtain the corresponding relation of the system effectiveness and the error rate.The comprehensive then different service types such as data service and speech business is to the requirement of the error rate, in mapping table, choose the suitable error rate as threshold value, this threshold value is compared to determine whether certain transmission technology is suitable for the 3G wireless access network with transmission equipment index to be assessed.
What deserves to be mentioned is: because data service is different to error rate sensitivity with speech business, data service is to error rate susceptibility height, and the error rate is greatly then retransmitted often, directly causes system effectiveness to reduce; And speech business is relatively low to error rate susceptibility, so should take all factors into consideration above-mentioned two kinds of dissimilar business when choosing the error code threshold value.
Below with reference to Fig. 2, the principle according to transmission technology system of selection of the present invention is described.As shown in Figure 2, at first in step 100,, measure pairing data transmission efficiency under the transmission conditions of the described different error rates by the transmission conditions of the different error rates of simulation between first and second communication equipments.In the present embodiment, first equipment is the base station, and second equipment is base station controller.
After this enter step 110, the efficiency of transmission threshold value is determined in the requirement of efficiency of transmission, determine corresponding error rate threshold value in view of the above according to type of service and user.
Enter step 120 then, select the error rate to be lower than the transmission technology of described error rate threshold value, realize the transmission between described first and second communication equipments.
According to above-mentioned principle, further explain and illustrate transmission technology system of selection proposed by the invention below.
Because the main application of 3G is data service, so in the time will assessing the transmission system of certain desire introducing 3G wireless access network, the efficient that at first needs to test system business under the various error rate situations.Usually adopt file downloading service as test case.In the time of test, at first the error rate with the error code analog machine is set at 0 (promptly not having error code).In order to prevent the influence of random error, improve test accuracy, need repeatedly download the file of same known dimensions and note each institute time-consuming, get time average as fiducial time.Next the error rate with the error code analog machine is set in a certain magnitude, it is time-consuming still repeatedly to download the each institute of above-mentioned file and record, and the download time mean value when getting time average and not having error code is compared the download efficiency that just can obtain under the error rate condition of this magnitude.The rest may be inferred, and the error rate with the error code analog machine is set in the efficient that different magnitudes just can be measured system under various error rate situations at every turn, thereby obtains the corresponding relation of the system effectiveness and the error rate.Table 1 shows the WCDMA wireless access network download efficiency of this method of testing acquisition of employing and the corresponding relation of the error rate.
| Insert the error rate in the transmission between base station and the base station controller | Download same file required time (10 times mean values) from server | Download efficiency |
| 0 does not have |
100 |
100％ |
| 10 -9 | 100 |
100％ |
| 10 -8 | 100 |
100％ |
| 10 -7 | 110 minutes | 90％ |
| 10 -6 | 200 minutes | 50％ |
| 10 -5 | 320 minutes | 31％ |
| 10 -4 | Greater than 750 minutes, can not move substantially | Substantially can not use less than 10% |
Table 1
What deserves to be mentioned is,, except each testing procedure need repeat repeatedly to average, also must guarantee to use identical 3G network and mobile phone in order to improve the accuracy of test.
For speech business, also can determine the corresponding relation of the voice quality and the error rate by setting the different error rates.Because speech business is insensitive to the error rate, so voice data (quality) is determined by artificial subjectivity usually.
After the corresponding relation of having determined the professional efficient of system data and the error rate and the voice quality and the error rate, just can determine that suitable threshold value is as judging whether certain transmission technology is fit to the foundation of 3G wireless access network according to user's request and type of service.The test result of analytical table 1 can find that when the error rate is better than 10-8 data service to mobile phone is substantially without any influence, but efficient can only reach about 90% when 10-7, and efficient is low to moderate below 10% when 10-4, and data service can not move substantially.For speech business, can determine also that according to artificial subjective judgement speech business can not hear under certain error rate.The factor of comprehensive above-mentioned two aspects can be chosen an acceptable error rate as the threshold value of judging.
Determined after the error rate threshold value that just the error rate index that the transmission equipment of desire assessment can be provided or error rate result of its test gained compared with error rate threshold value as if being lower than threshold value, shows that then this transmission technology is fit to the 3G wireless access network; Otherwise then this technology can not be introduced the 3G wireless access network.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (4)
1. transmission technology system of selection, described method are used for the transmission technology of 3G (Third Generation) Moblie technology wireless access network to be selected, and it is characterized in that comprising following steps:
A is by the transmission conditions of the different error rates of simulation between first and second communication equipments, to under the transmission conditions of the different error rates, transmit the identical required transmission time of big small documents, with the error rate be under zero the transmission conditions required transmission time of the described file of transmission compare, obtain pairing efficiency of transmission under the transmission conditions of the different error rates;
B to the requirement of data transmission efficiency, determines the efficiency of transmission threshold value according to type of service and user, and determines corresponding error rate threshold value in view of the above;
C selects the error rate to be lower than the transmission technology of the transmission technology of described error rate threshold value as wireless access network in the 3G (Third Generation) Moblie technology, realizes the transmission between described first and second communication equipments.
2. transmission technology system of selection according to claim 1 is characterized in that, described first communication equipment is the base station, and described second communication equipment is base station controller.
3. transmission technology system of selection according to claim 1 is characterized in that, in the described steps A, by between described first and second communication equipments error code analog machine being set, realizes the simulation to different error rate transmission conditions.
4. transmission technology system of selection according to claim 1, it is characterized in that, in the described steps A, under the transmission conditions of same bit error rate, repeatedly transmit described file, and with the pairing transmission time under the transmission conditions of mean value as this error rate of required time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200410037125A CN100583726C (en) | 2004-05-29 | 2004-05-29 | Transmission technique selection method |
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| CN200410037125A CN100583726C (en) | 2004-05-29 | 2004-05-29 | Transmission technique selection method |
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| CN1705259A CN1705259A (en) | 2005-12-07 |
| CN100583726C true CN100583726C (en) | 2010-01-20 |
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| CN200410037125A Expired - Fee Related CN100583726C (en) | 2004-05-29 | 2004-05-29 | Transmission technique selection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103780423B (en) * | 2012-10-25 | 2017-05-31 | 中国电信股份有限公司 | The online method for changing alarm threshold, device and data transmission network |
| CN112039771A (en) * | 2019-06-03 | 2020-12-04 | 华为技术有限公司 | Processing method and device based on link error code |
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Non-Patent Citations (4)
| Title |
|---|
| 数据通信中的重发差错控制系统. 方桂娟.三明高等专科学校学报，第1期. 1998 |
| 数据通信中的重发差错控制系统. 方桂娟.三明高等专科学校学报，第1期. 1998 * |
| 第三代移动通信中的自适应调制和编码方法. 汤敏等.复旦学报(自然科学版)，第43卷第1期. 2004 |
| 第三代移动通信中的自适应调制和编码方法. 汤敏等.复旦学报(自然科学版)，第43卷第1期. 2004 * |
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